[3] | 1 | MODULE istate |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE istate *** |
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| 4 | !! Ocean state : initial state setting |
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| 5 | !!===================================================================== |
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[2104] | 6 | !! History : OPA ! 1989-12 (P. Andrich) Original code |
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| 7 | !! 5.0 ! 1991-11 (G. Madec) rewritting |
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| 8 | !! 6.0 ! 1996-01 (G. Madec) terrain following coordinates |
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| 9 | !! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_eel |
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| 10 | !! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_uvg |
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| 11 | !! NEMO 1.0 ! 2003-08 (G. Madec, C. Talandier) F90: Free form, modules + EEL R5 |
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| 12 | !! - ! 2004-05 (A. Koch-Larrouy) istate_gyre |
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| 13 | !! 2.0 ! 2006-07 (S. Masson) distributed restart using iom |
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| 14 | !! 3.3 ! 2010-10 (C. Ethe) merge TRC-TRA |
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[3294] | 15 | !! 3.4 ! 2011-04 (G. Madec) Merge of dtatem and dtasal & suppression of tb,tn/sb,sn |
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[508] | 16 | !!---------------------------------------------------------------------- |
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[3] | 17 | |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | !! istate_init : initial state setting |
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| 20 | !! istate_tem : analytical profile for initial Temperature |
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| 21 | !! istate_sal : analytical profile for initial Salinity |
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| 22 | !! istate_eel : initial state setting of EEL R5 configuration |
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[93] | 23 | !! istate_gyre : initial state setting of GYRE configuration |
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[3] | 24 | !! istate_uvg : initial velocity in geostropic balance |
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| 25 | !!---------------------------------------------------------------------- |
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| 26 | USE oce ! ocean dynamics and active tracers |
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| 27 | USE dom_oce ! ocean space and time domain |
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[4245] | 28 | USE c1d ! 1D vertical configuration |
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[2104] | 29 | USE daymod ! calendar |
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| 30 | USE eosbn2 ! eq. of state, Brunt Vaisala frequency (eos routine) |
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[3] | 31 | USE ldftra_oce ! ocean active tracers: lateral physics |
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| 32 | USE zdf_oce ! ocean vertical physics |
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| 33 | USE phycst ! physical constants |
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[3294] | 34 | USE dtatsd ! data temperature and salinity (dta_tsd routine) |
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[4245] | 35 | USE dtauvd ! data: U & V current (dta_uvd routine) |
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[544] | 36 | USE zpshde ! partial step: hor. derivative (zps_hde routine) |
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| 37 | USE eosbn2 ! equation of state (eos bn2 routine) |
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[593] | 38 | USE domvvl ! varying vertical mesh |
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| 39 | USE dynspg_oce ! pressure gradient schemes |
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[4370] | 40 | USE dynspg_flt ! filtered free surface |
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[3764] | 41 | USE sol_oce ! ocean solver variables |
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[4990] | 42 | ! |
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| 43 | USE in_out_manager ! I/O manager |
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| 44 | USE iom ! I/O library |
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[2715] | 45 | USE lib_mpp ! MPP library |
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[3680] | 46 | USE restart ! restart |
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[3294] | 47 | USE wrk_nemo ! Memory allocation |
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| 48 | USE timing ! Timing |
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[2715] | 49 | |
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[3] | 50 | IMPLICIT NONE |
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| 51 | PRIVATE |
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| 52 | |
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[508] | 53 | PUBLIC istate_init ! routine called by step.F90 |
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[3] | 54 | |
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| 55 | !! * Substitutions |
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| 56 | # include "domzgr_substitute.h90" |
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| 57 | # include "vectopt_loop_substitute.h90" |
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| 58 | !!---------------------------------------------------------------------- |
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[4990] | 59 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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[888] | 60 | !! $Id$ |
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[2715] | 61 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 62 | !!---------------------------------------------------------------------- |
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| 63 | CONTAINS |
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| 64 | |
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| 65 | SUBROUTINE istate_init |
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| 66 | !!---------------------------------------------------------------------- |
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| 67 | !! *** ROUTINE istate_init *** |
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| 68 | !! |
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[508] | 69 | !! ** Purpose : Initialization of the dynamics and tracer fields. |
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[3] | 70 | !!---------------------------------------------------------------------- |
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[2148] | 71 | ! - ML - needed for initialization of e3t_b |
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[4354] | 72 | INTEGER :: ji,jj,jk ! dummy loop indices |
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[4245] | 73 | REAL(wp), POINTER, DIMENSION(:,:,:,:) :: zuvd ! U & V data workspace |
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[3294] | 74 | !!---------------------------------------------------------------------- |
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| 75 | ! |
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[4990] | 76 | IF( nn_timing == 1 ) CALL timing_start('istate_init') |
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[3294] | 77 | ! |
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[3] | 78 | |
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[4990] | 79 | IF(lwp) WRITE(numout,*) ' ' |
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[508] | 80 | IF(lwp) WRITE(numout,*) 'istate_ini : Initialization of the dynamics and tracers' |
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| 81 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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[3] | 82 | |
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[3294] | 83 | CALL dta_tsd_init ! Initialisation of T & S input data |
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[4245] | 84 | IF( lk_c1d ) CALL dta_uvd_init ! Initialization of U & V input data |
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[3] | 85 | |
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[4990] | 86 | rhd (:,:,: ) = 0._wp |
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| 87 | rhop (:,:,: ) = 0._wp |
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| 88 | rn2 (:,:,: ) = 0._wp |
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| 89 | tsa (:,:,:,:) = 0._wp |
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| 90 | rab_b(:,:,:,:) = 0._wp |
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| 91 | rab_n(:,:,:,:) = 0._wp |
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[3294] | 92 | |
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[15] | 93 | IF( ln_rstart ) THEN ! Restart from a file |
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[3] | 94 | ! ! ------------------- |
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| 95 | CALL rst_read ! Read the restart file |
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[1130] | 96 | CALL day_init ! model calendar (using both namelist and restart infos) |
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[3] | 97 | ELSE |
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| 98 | ! ! Start from rest |
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| 99 | ! ! --------------- |
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[1130] | 100 | numror = 0 ! define numror = 0 -> no restart file to read |
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[3] | 101 | neuler = 0 ! Set time-step indicator at nit000 (euler forward) |
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[1130] | 102 | CALL day_init ! model calendar (using both namelist and restart infos) |
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[508] | 103 | ! ! Initialization of ocean to zero |
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[3294] | 104 | ! before fields ! now fields |
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| 105 | sshb (:,:) = 0._wp ; sshn (:,:) = 0._wp |
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| 106 | ub (:,:,:) = 0._wp ; un (:,:,:) = 0._wp |
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| 107 | vb (:,:,:) = 0._wp ; vn (:,:,:) = 0._wp |
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| 108 | rotb (:,:,:) = 0._wp ; rotn (:,:,:) = 0._wp |
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| 109 | hdivb(:,:,:) = 0._wp ; hdivn(:,:,:) = 0._wp |
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[508] | 110 | ! |
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[3] | 111 | IF( cp_cfg == 'eel' ) THEN |
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[2104] | 112 | CALL istate_eel ! EEL configuration : start from pre-defined U,V T-S fields |
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[434] | 113 | ELSEIF( cp_cfg == 'gyre' ) THEN |
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[2104] | 114 | CALL istate_gyre ! GYRE configuration : start from pre-defined T-S fields |
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[4990] | 115 | ELSEIF( cp_cfg == 'isomip' .OR. cp_cfg == 'isomip2') THEN |
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| 116 | IF(lwp) WRITE(numout,*) 'Initialization of T+S for ISOMIP domain' |
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| 117 | tsn(:,:,:,jp_tem)=-1.9*tmask(:,:,:) ! ISOMIP configuration : start from constant T+S fields |
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| 118 | tsn(:,:,:,jp_sal)=34.4*tmask(:,:,:) |
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| 119 | tsb(:,:,:,:)=tsn(:,:,:,:) |
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[4245] | 120 | ELSE ! Initial T-S, U-V fields read in files |
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| 121 | IF ( ln_tsd_init ) THEN ! read 3D T and S data at nit000 |
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| 122 | CALL dta_tsd( nit000, tsb ) |
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| 123 | tsn(:,:,:,:) = tsb(:,:,:,:) |
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| 124 | ! |
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| 125 | ELSE ! Initial T-S fields defined analytically |
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| 126 | CALL istate_t_s |
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| 127 | ENDIF |
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| 128 | IF ( ln_uvd_init .AND. lk_c1d ) THEN ! read 3D U and V data at nit000 |
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| 129 | CALL wrk_alloc( jpi, jpj, jpk, 2, zuvd ) |
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| 130 | CALL dta_uvd( nit000, zuvd ) |
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| 131 | ub(:,:,:) = zuvd(:,:,:,1) ; un(:,:,:) = ub(:,:,:) |
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| 132 | vb(:,:,:) = zuvd(:,:,:,2) ; vn(:,:,:) = vb(:,:,:) |
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| 133 | CALL wrk_dealloc( jpi, jpj, jpk, 2, zuvd ) |
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| 134 | ENDIF |
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[3] | 135 | ENDIF |
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[2104] | 136 | ! |
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[4313] | 137 | CALL eos( tsb, rhd, rhop, gdept_0(:,:,:) ) ! before potential and in situ densities |
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[2236] | 138 | #if ! defined key_c1d |
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[5120] | 139 | IF( ln_zps .AND. .NOT. ln_isfcav) & |
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| 140 | & CALL zps_hde ( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient |
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| 141 | & rhd, gru , grv ) ! of t, s, rd at the last ocean level |
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| 142 | IF( ln_zps .AND. ln_isfcav) & |
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[5189] | 143 | & CALL zps_hde_isf( nit000, jpts, tsb, gtsu, gtsv, gtui, gtvi, & ! Partial steps for top cell (ISF) |
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| 144 | & rhd, gru , grv , grui, grvi ) ! of t, s, rd at the last ocean level |
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[2236] | 145 | #endif |
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[2148] | 146 | ! |
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| 147 | ! - ML - sshn could be modified by istate_eel, so that initialization of fse3t_b is done here |
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| 148 | IF( lk_vvl ) THEN |
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| 149 | DO jk = 1, jpk |
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| 150 | fse3t_b(:,:,jk) = fse3t_n(:,:,jk) |
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| 151 | ENDDO |
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| 152 | ENDIF |
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| 153 | ! |
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[3] | 154 | ENDIF |
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[1438] | 155 | ! |
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[2104] | 156 | IF( lk_agrif ) THEN ! read free surface arrays in restart file |
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[593] | 157 | IF( ln_rstart ) THEN |
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[3764] | 158 | IF( lk_dynspg_flt ) THEN ! read or initialize the following fields |
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| 159 | ! ! gcx, gcxb for agrif_opa_init |
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| 160 | IF( sol_oce_alloc() > 0 ) CALL ctl_stop('agrif sol_oce_alloc: allocation of arrays failed') |
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| 161 | CALL flt_rst( nit000, 'READ' ) |
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| 162 | ENDIF |
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| 163 | ENDIF ! explicit case not coded yet with AGRIF |
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[1200] | 164 | ENDIF |
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[508] | 165 | ! |
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[4354] | 166 | ! |
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| 167 | ! Initialize "now" and "before" barotropic velocities: |
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| 168 | ! Do it whatever the free surface method, these arrays |
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| 169 | ! being eventually used |
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| 170 | ! |
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| 171 | ! |
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| 172 | un_b(:,:) = 0._wp ; vn_b(:,:) = 0._wp |
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| 173 | ub_b(:,:) = 0._wp ; vb_b(:,:) = 0._wp |
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| 174 | ! |
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| 175 | DO jk = 1, jpkm1 |
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| 176 | DO jj = 1, jpj |
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| 177 | DO ji = 1, jpi |
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| 178 | un_b(ji,jj) = un_b(ji,jj) + fse3u_n(ji,jj,jk) * un(ji,jj,jk) * umask(ji,jj,jk) |
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| 179 | vn_b(ji,jj) = vn_b(ji,jj) + fse3v_n(ji,jj,jk) * vn(ji,jj,jk) * vmask(ji,jj,jk) |
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| 180 | ! |
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[4370] | 181 | ub_b(ji,jj) = ub_b(ji,jj) + fse3u_b(ji,jj,jk) * ub(ji,jj,jk) * umask(ji,jj,jk) |
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| 182 | vb_b(ji,jj) = vb_b(ji,jj) + fse3v_b(ji,jj,jk) * vb(ji,jj,jk) * vmask(ji,jj,jk) |
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[4354] | 183 | END DO |
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| 184 | END DO |
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| 185 | END DO |
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| 186 | ! |
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[4370] | 187 | un_b(:,:) = un_b(:,:) * hur (:,:) |
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| 188 | vn_b(:,:) = vn_b(:,:) * hvr (:,:) |
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[4354] | 189 | ! |
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[4370] | 190 | ub_b(:,:) = ub_b(:,:) * hur_b(:,:) |
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| 191 | vb_b(:,:) = vb_b(:,:) * hvr_b(:,:) |
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[4354] | 192 | ! |
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| 193 | ! |
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[4990] | 194 | IF( nn_timing == 1 ) CALL timing_stop('istate_init') |
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[3294] | 195 | ! |
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[3] | 196 | END SUBROUTINE istate_init |
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| 197 | |
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[4990] | 198 | |
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[3294] | 199 | SUBROUTINE istate_t_s |
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[3] | 200 | !!--------------------------------------------------------------------- |
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[3294] | 201 | !! *** ROUTINE istate_t_s *** |
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[3] | 202 | !! |
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| 203 | !! ** Purpose : Intialization of the temperature field with an |
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| 204 | !! analytical profile or a file (i.e. in EEL configuration) |
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| 205 | !! |
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[3294] | 206 | !! ** Method : - temperature: use Philander analytic profile |
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| 207 | !! - salinity : use to a constant value 35.5 |
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[3] | 208 | !! |
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| 209 | !! References : Philander ??? |
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| 210 | !!---------------------------------------------------------------------- |
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[3294] | 211 | INTEGER :: ji, jj, jk |
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| 212 | REAL(wp) :: zsal = 35.50 |
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[3] | 213 | !!---------------------------------------------------------------------- |
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[508] | 214 | ! |
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[3] | 215 | IF(lwp) WRITE(numout,*) |
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[3294] | 216 | IF(lwp) WRITE(numout,*) 'istate_t_s : Philander s initial temperature profile' |
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| 217 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~ and constant salinity (',zsal,' psu)' |
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[2104] | 218 | ! |
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[3] | 219 | DO jk = 1, jpk |
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[3294] | 220 | tsn(:,:,jk,jp_tem) = ( ( ( 7.5 - 0. * ABS( gphit(:,:) )/30. ) * ( 1.-TANH((fsdept(:,:,jk)-80.)/30.) ) & |
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| 221 | & + 10. * ( 5000. - fsdept(:,:,jk) ) /5000.) ) * tmask(:,:,jk) |
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| 222 | tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem) |
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[3] | 223 | END DO |
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[3294] | 224 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 225 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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[2104] | 226 | ! |
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[3294] | 227 | END SUBROUTINE istate_t_s |
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[3] | 228 | |
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[4990] | 229 | |
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[3] | 230 | SUBROUTINE istate_eel |
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| 231 | !!---------------------------------------------------------------------- |
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| 232 | !! *** ROUTINE istate_eel *** |
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| 233 | !! |
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| 234 | !! ** Purpose : Initialization of the dynamics and tracers for EEL R5 |
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| 235 | !! configuration (channel with or without a topographic bump) |
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| 236 | !! |
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| 237 | !! ** Method : - set temprature field |
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| 238 | !! - set salinity field |
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| 239 | !! - set velocity field including horizontal divergence |
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| 240 | !! and relative vorticity fields |
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| 241 | !!---------------------------------------------------------------------- |
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| 242 | USE divcur ! hor. divergence & rel. vorticity (div_cur routine) |
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[473] | 243 | USE iom |
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[4990] | 244 | ! |
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[3] | 245 | INTEGER :: inum ! temporary logical unit |
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| 246 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[479] | 247 | INTEGER :: ijloc |
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[508] | 248 | REAL(wp) :: zh1, zh2, zslope, zcst, zfcor ! temporary scalars |
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[2104] | 249 | REAL(wp) :: zt1 = 15._wp ! surface temperature value (EEL R5) |
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| 250 | REAL(wp) :: zt2 = 5._wp ! bottom temperature value (EEL R5) |
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| 251 | REAL(wp) :: zsal = 35.0_wp ! constant salinity (EEL R2, R5 and R6) |
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| 252 | REAL(wp) :: zueel = 0.1_wp ! constant uniform zonal velocity (EEL R5) |
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[508] | 253 | REAL(wp), DIMENSION(jpiglo,jpjglo) :: zssh ! initial ssh over the global domain |
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[3] | 254 | !!---------------------------------------------------------------------- |
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[4990] | 255 | ! |
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[3] | 256 | SELECT CASE ( jp_cfg ) |
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| 257 | ! ! ==================== |
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| 258 | CASE ( 5 ) ! EEL R5 configuration |
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| 259 | ! ! ==================== |
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[2104] | 260 | ! |
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[3] | 261 | ! set temperature field with a linear profile |
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| 262 | ! ------------------------------------------- |
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| 263 | IF(lwp) WRITE(numout,*) |
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| 264 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: linear temperature profile' |
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| 265 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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[2104] | 266 | ! |
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[4292] | 267 | zh1 = gdept_1d( 1 ) |
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| 268 | zh2 = gdept_1d(jpkm1) |
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[2104] | 269 | ! |
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[3] | 270 | zslope = ( zt1 - zt2 ) / ( zh1 - zh2 ) |
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| 271 | zcst = ( zt1 * ( zh1 - zh2) - ( zt1 - zt2 ) * zh1 ) / ( zh1 - zh2 ) |
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[2104] | 272 | ! |
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[3] | 273 | DO jk = 1, jpk |
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[3294] | 274 | tsn(:,:,jk,jp_tem) = ( zt2 + zt1 * exp( - fsdept(:,:,jk) / 1000 ) ) * tmask(:,:,jk) |
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| 275 | tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem) |
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[3] | 276 | END DO |
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[2104] | 277 | ! |
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[3294] | 278 | IF(lwp) CALL prizre( tsn(:,:,:,jp_tem), jpi , jpj , jpk , jpj/2 , & |
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| 279 | & 1 , jpi , 5 , 1 , jpk , & |
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| 280 | & 1 , 1. , numout ) |
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[2104] | 281 | ! |
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[3] | 282 | ! set salinity field to a constant value |
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| 283 | ! -------------------------------------- |
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| 284 | IF(lwp) WRITE(numout,*) |
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| 285 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal |
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| 286 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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[2104] | 287 | ! |
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[3294] | 288 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 289 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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[2104] | 290 | ! |
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[3] | 291 | ! set the dynamics: U,V, hdiv, rot (and ssh if necessary) |
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| 292 | ! ---------------- |
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| 293 | ! Start EEL5 configuration with barotropic geostrophic velocities |
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| 294 | ! according the sshb and sshn SSH imposed. |
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[479] | 295 | ! we assume a uniform grid (hence the use of e1t(1,1) for delta_y) |
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| 296 | ! we use the Coriolis frequency at mid-channel. |
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| 297 | ub(:,:,:) = zueel * umask(:,:,:) |
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[3] | 298 | un(:,:,:) = ub(:,:,:) |
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[479] | 299 | ijloc = mj0(INT(jpjglo-1)/2) |
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| 300 | zfcor = ff(1,ijloc) |
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[2104] | 301 | ! |
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[3] | 302 | DO jj = 1, jpjglo |
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[479] | 303 | zssh(:,jj) = - (FLOAT(jj)- FLOAT(jpjglo-1)/2.)*zueel*e1t(1,1)*zfcor/grav |
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[3] | 304 | END DO |
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[2104] | 305 | ! |
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[479] | 306 | IF(lwp) THEN |
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| 307 | WRITE(numout,*) ' Uniform zonal velocity for EEL R5:',zueel |
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| 308 | WRITE(numout,*) ' Geostrophic SSH profile as a function of y:' |
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| 309 | WRITE(numout,'(12(1x,f6.2))') zssh(1,:) |
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| 310 | ENDIF |
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[2104] | 311 | ! |
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[3] | 312 | DO jj = 1, nlcj |
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| 313 | DO ji = 1, nlci |
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| 314 | sshb(ji,jj) = zssh( mig(ji) , mjg(jj) ) * tmask(ji,jj,1) |
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| 315 | END DO |
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| 316 | END DO |
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| 317 | sshb(nlci+1:jpi, : ) = 0.e0 ! set to zero extra mpp columns |
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| 318 | sshb( : ,nlcj+1:jpj) = 0.e0 ! set to zero extra mpp rows |
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[2104] | 319 | ! |
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[3] | 320 | sshn(:,:) = sshb(:,:) ! set now ssh to the before value |
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[2104] | 321 | ! |
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[593] | 322 | IF( nn_rstssh /= 0 ) THEN |
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[2104] | 323 | nn_rstssh = 0 ! hand-made initilization of ssh |
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[593] | 324 | CALL ctl_warn( 'istate_eel: force nn_rstssh = 0' ) |
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[558] | 325 | ENDIF |
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[2104] | 326 | ! |
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| 327 | CALL div_cur( nit000 ) ! horizontal divergence and relative vorticity (curl) |
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[3] | 328 | ! N.B. the vertical velocity will be computed from the horizontal divergence field |
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| 329 | ! in istate by a call to wzv routine |
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| 330 | |
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| 331 | |
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| 332 | ! ! ========================== |
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| 333 | CASE ( 2 , 6 ) ! EEL R2 or R6 configuration |
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| 334 | ! ! ========================== |
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[2104] | 335 | ! |
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[3] | 336 | ! set temperature field with a NetCDF file |
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| 337 | ! ---------------------------------------- |
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| 338 | IF(lwp) WRITE(numout,*) |
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| 339 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R2 or R6: read initial temperature in a NetCDF file' |
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| 340 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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[2104] | 341 | ! |
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[473] | 342 | CALL iom_open ( 'eel.initemp', inum ) |
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[3294] | 343 | CALL iom_get ( inum, jpdom_data, 'initemp', tsb(:,:,:,jp_tem) ) ! read before temprature (tb) |
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[473] | 344 | CALL iom_close( inum ) |
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[2104] | 345 | ! |
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[3294] | 346 | tsn(:,:,:,jp_tem) = tsb(:,:,:,jp_tem) ! set nox temperature to tb |
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[2104] | 347 | ! |
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[3294] | 348 | IF(lwp) CALL prizre( tsn(:,:,:,jp_tem), jpi , jpj , jpk , jpj/2 , & |
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| 349 | & 1 , jpi , 5 , 1 , jpk , & |
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| 350 | & 1 , 1. , numout ) |
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[2104] | 351 | ! |
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[3] | 352 | ! set salinity field to a constant value |
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| 353 | ! -------------------------------------- |
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| 354 | IF(lwp) WRITE(numout,*) |
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| 355 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal |
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| 356 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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[2104] | 357 | ! |
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[3294] | 358 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 359 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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[2104] | 360 | ! |
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[3] | 361 | ! ! =========================== |
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| 362 | CASE DEFAULT ! NONE existing configuration |
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| 363 | ! ! =========================== |
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[473] | 364 | WRITE(ctmp1,*) 'EEL with a ', jp_cfg,' km resolution is not coded' |
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| 365 | CALL ctl_stop( ctmp1 ) |
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[2104] | 366 | ! |
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[3] | 367 | END SELECT |
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[2104] | 368 | ! |
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[3] | 369 | END SUBROUTINE istate_eel |
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| 370 | |
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| 371 | |
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[93] | 372 | SUBROUTINE istate_gyre |
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| 373 | !!---------------------------------------------------------------------- |
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| 374 | !! *** ROUTINE istate_gyre *** |
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| 375 | !! |
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| 376 | !! ** Purpose : Initialization of the dynamics and tracers for GYRE |
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| 377 | !! configuration (double gyre with rotated domain) |
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| 378 | !! |
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| 379 | !! ** Method : - set temprature field |
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| 380 | !! - set salinity field |
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| 381 | !!---------------------------------------------------------------------- |
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[473] | 382 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[508] | 383 | INTEGER :: inum ! temporary logical unit |
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| 384 | INTEGER, PARAMETER :: ntsinit = 0 ! (0/1) (analytical/input data files) T&S initialization |
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[93] | 385 | !!---------------------------------------------------------------------- |
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[4990] | 386 | ! |
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[434] | 387 | SELECT CASE ( ntsinit) |
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[4990] | 388 | ! |
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[434] | 389 | CASE ( 0 ) ! analytical T/S profil deduced from LEVITUS |
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| 390 | IF(lwp) WRITE(numout,*) |
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| 391 | IF(lwp) WRITE(numout,*) 'istate_gyre : initial analytical T and S profil deduced from LEVITUS ' |
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| 392 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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[4990] | 393 | ! |
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[434] | 394 | DO jk = 1, jpk |
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| 395 | DO jj = 1, jpj |
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| 396 | DO ji = 1, jpi |
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[3294] | 397 | tsn(ji,jj,jk,jp_tem) = ( 16. - 12. * TANH( (fsdept(ji,jj,jk) - 400) / 700 ) ) & |
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[434] | 398 | & * (-TANH( (500-fsdept(ji,jj,jk)) / 150 ) + 1) / 2 & |
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| 399 | & + ( 15. * ( 1. - TANH( (fsdept(ji,jj,jk)-50.) / 1500.) ) & |
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| 400 | & - 1.4 * TANH((fsdept(ji,jj,jk)-100.) / 100.) & |
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| 401 | & + 7. * (1500. - fsdept(ji,jj,jk)) / 1500. ) & |
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| 402 | & * (-TANH( (fsdept(ji,jj,jk) - 500) / 150) + 1) / 2 |
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[3294] | 403 | tsn(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem) * tmask(ji,jj,jk) |
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| 404 | tsb(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem) |
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[434] | 405 | |
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[3294] | 406 | tsn(ji,jj,jk,jp_sal) = ( 36.25 - 1.13 * TANH( (fsdept(ji,jj,jk) - 305) / 460 ) ) & |
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[434] | 407 | & * (-TANH((500 - fsdept(ji,jj,jk)) / 150) + 1) / 2 & |
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| 408 | & + ( 35.55 + 1.25 * (5000. - fsdept(ji,jj,jk)) / 5000. & |
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| 409 | & - 1.62 * TANH( (fsdept(ji,jj,jk) - 60. ) / 650. ) & |
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| 410 | & + 0.2 * TANH( (fsdept(ji,jj,jk) - 35. ) / 100. ) & |
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| 411 | & + 0.2 * TANH( (fsdept(ji,jj,jk) - 1000.) / 5000.) ) & |
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| 412 | & * (-TANH((fsdept(ji,jj,jk) - 500) / 150) + 1) / 2 |
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[3294] | 413 | tsn(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal) * tmask(ji,jj,jk) |
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| 414 | tsb(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal) |
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[434] | 415 | END DO |
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[93] | 416 | END DO |
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| 417 | END DO |
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[4990] | 418 | ! |
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[434] | 419 | CASE ( 1 ) ! T/S data fields read in dta_tem.nc/data_sal.nc files |
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| 420 | IF(lwp) WRITE(numout,*) |
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| 421 | IF(lwp) WRITE(numout,*) 'istate_gyre : initial T and S read from dta_tem.nc/data_sal.nc files' |
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| 422 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 423 | IF(lwp) WRITE(numout,*) ' NetCDF FORMAT' |
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| 424 | |
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| 425 | ! Read temperature field |
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| 426 | ! ---------------------- |
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[473] | 427 | CALL iom_open ( 'data_tem', inum ) |
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[3294] | 428 | CALL iom_get ( inum, jpdom_data, 'votemper', tsn(:,:,:,jp_tem) ) |
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[473] | 429 | CALL iom_close( inum ) |
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[434] | 430 | |
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[3294] | 431 | tsn(:,:,:,jp_tem) = tsn(:,:,:,jp_tem) * tmask(:,:,:) |
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| 432 | tsb(:,:,:,jp_tem) = tsn(:,:,:,jp_tem) |
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[434] | 433 | |
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| 434 | ! Read salinity field |
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| 435 | ! ------------------- |
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[473] | 436 | CALL iom_open ( 'data_sal', inum ) |
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[3294] | 437 | CALL iom_get ( inum, jpdom_data, 'vosaline', tsn(:,:,:,jp_sal) ) |
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[473] | 438 | CALL iom_close( inum ) |
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[434] | 439 | |
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[3294] | 440 | tsn(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) * tmask(:,:,:) |
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| 441 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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[4990] | 442 | ! |
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[434] | 443 | END SELECT |
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[4990] | 444 | ! |
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[93] | 445 | IF(lwp) THEN |
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| 446 | WRITE(numout,*) |
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| 447 | WRITE(numout,*) ' Initial temperature and salinity profiles:' |
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[4292] | 448 | WRITE(numout, "(9x,' level gdept_1d temperature salinity ')" ) |
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| 449 | WRITE(numout, "(10x, i4, 3f10.2)" ) ( jk, gdept_1d(jk), tsn(2,2,jk,jp_tem), tsn(2,2,jk,jp_sal), jk = 1, jpk ) |
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[93] | 450 | ENDIF |
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[4990] | 451 | ! |
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[93] | 452 | END SUBROUTINE istate_gyre |
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| 453 | |
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[4990] | 454 | |
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[3] | 455 | SUBROUTINE istate_uvg |
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| 456 | !!---------------------------------------------------------------------- |
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| 457 | !! *** ROUTINE istate_uvg *** |
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| 458 | !! |
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| 459 | !! ** Purpose : Compute the geostrophic velocities from (tn,sn) fields |
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| 460 | !! |
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| 461 | !! ** Method : Using the hydrostatic hypothesis the now hydrostatic |
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| 462 | !! pressure is computed by integrating the in-situ density from the |
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| 463 | !! surface to the bottom. |
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| 464 | !! p=integral [ rau*g dz ] |
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| 465 | !!---------------------------------------------------------------------- |
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[359] | 466 | USE dynspg ! surface pressure gradient (dyn_spg routine) |
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[3] | 467 | USE divcur ! hor. divergence & rel. vorticity (div_cur routine) |
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| 468 | USE lbclnk ! ocean lateral boundary condition (or mpp link) |
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[4990] | 469 | ! |
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[3] | 470 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 471 | INTEGER :: indic ! ??? |
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[508] | 472 | REAL(wp) :: zmsv, zphv, zmsu, zphu, zalfg ! temporary scalars |
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[3294] | 473 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zprn |
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[3] | 474 | !!---------------------------------------------------------------------- |
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[3294] | 475 | ! |
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| 476 | CALL wrk_alloc( jpi, jpj, jpk, zprn) |
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| 477 | ! |
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[3] | 478 | IF(lwp) WRITE(numout,*) |
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| 479 | IF(lwp) WRITE(numout,*) 'istate_uvg : Start from Geostrophy' |
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| 480 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 481 | |
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| 482 | ! Compute the now hydrostatic pressure |
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| 483 | ! ------------------------------------ |
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| 484 | |
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[15] | 485 | zalfg = 0.5 * grav * rau0 |
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[508] | 486 | |
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| 487 | zprn(:,:,1) = zalfg * fse3w(:,:,1) * ( 1 + rhd(:,:,1) ) ! Surface value |
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[3] | 488 | |
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[508] | 489 | DO jk = 2, jpkm1 ! Vertical integration from the surface |
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[3] | 490 | zprn(:,:,jk) = zprn(:,:,jk-1) & |
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[359] | 491 | & + zalfg * fse3w(:,:,jk) * ( 2. + rhd(:,:,jk) + rhd(:,:,jk-1) ) |
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[3] | 492 | END DO |
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| 493 | |
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| 494 | ! Compute geostrophic balance |
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| 495 | ! --------------------------- |
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| 496 | DO jk = 1, jpkm1 |
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| 497 | DO jj = 2, jpjm1 |
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| 498 | DO ji = fs_2, fs_jpim1 ! vertor opt. |
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| 499 | zmsv = 1. / MAX( umask(ji-1,jj+1,jk) + umask(ji ,jj+1,jk) & |
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| 500 | + umask(ji-1,jj ,jk) + umask(ji ,jj ,jk) , 1. ) |
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| 501 | zphv = ( zprn(ji ,jj+1,jk) - zprn(ji-1,jj+1,jk) ) * umask(ji-1,jj+1,jk) / e1u(ji-1,jj+1) & |
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| 502 | + ( zprn(ji+1,jj+1,jk) - zprn(ji ,jj+1,jk) ) * umask(ji ,jj+1,jk) / e1u(ji ,jj+1) & |
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| 503 | + ( zprn(ji ,jj ,jk) - zprn(ji-1,jj ,jk) ) * umask(ji-1,jj ,jk) / e1u(ji-1,jj ) & |
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| 504 | + ( zprn(ji+1,jj ,jk) - zprn(ji ,jj ,jk) ) * umask(ji ,jj ,jk) / e1u(ji ,jj ) |
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| 505 | zphv = 1. / rau0 * zphv * zmsv * vmask(ji,jj,jk) |
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| 506 | |
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| 507 | zmsu = 1. / MAX( vmask(ji+1,jj ,jk) + vmask(ji ,jj ,jk) & |
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| 508 | + vmask(ji+1,jj-1,jk) + vmask(ji ,jj-1,jk) , 1. ) |
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| 509 | zphu = ( zprn(ji+1,jj+1,jk) - zprn(ji+1,jj ,jk) ) * vmask(ji+1,jj ,jk) / e2v(ji+1,jj ) & |
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| 510 | + ( zprn(ji ,jj+1,jk) - zprn(ji ,jj ,jk) ) * vmask(ji ,jj ,jk) / e2v(ji ,jj ) & |
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| 511 | + ( zprn(ji+1,jj ,jk) - zprn(ji+1,jj-1,jk) ) * vmask(ji+1,jj-1,jk) / e2v(ji+1,jj-1) & |
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| 512 | + ( zprn(ji ,jj ,jk) - zprn(ji ,jj-1,jk) ) * vmask(ji ,jj-1,jk) / e2v(ji ,jj-1) |
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| 513 | zphu = 1. / rau0 * zphu * zmsu * umask(ji,jj,jk) |
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| 514 | |
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| 515 | ! Compute the geostrophic velocities |
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| 516 | un(ji,jj,jk) = -2. * zphu / ( ff(ji,jj) + ff(ji ,jj-1) ) |
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| 517 | vn(ji,jj,jk) = 2. * zphv / ( ff(ji,jj) + ff(ji-1,jj ) ) |
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| 518 | END DO |
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| 519 | END DO |
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| 520 | END DO |
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| 521 | |
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| 522 | IF(lwp) WRITE(numout,*) ' we force to zero bottom velocity' |
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| 523 | |
---|
| 524 | ! Susbtract the bottom velocity (level jpk-1 for flat bottom case) |
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| 525 | ! to have a zero bottom velocity |
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| 526 | |
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| 527 | DO jk = 1, jpkm1 |
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| 528 | un(:,:,jk) = ( un(:,:,jk) - un(:,:,jpkm1) ) * umask(:,:,jk) |
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| 529 | vn(:,:,jk) = ( vn(:,:,jk) - vn(:,:,jpkm1) ) * vmask(:,:,jk) |
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| 530 | END DO |
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| 531 | |
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| 532 | CALL lbc_lnk( un, 'U', -1. ) |
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| 533 | CALL lbc_lnk( vn, 'V', -1. ) |
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| 534 | |
---|
| 535 | ub(:,:,:) = un(:,:,:) |
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| 536 | vb(:,:,:) = vn(:,:,:) |
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| 537 | |
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| 538 | ! WARNING !!!!! |
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| 539 | ! after initializing u and v, we need to calculate the initial streamfunction bsf. |
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| 540 | ! Otherwise, only the trend will be computed and the model will blow up (inconsistency). |
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| 541 | ! to do that, we call dyn_spg with a special trick: |
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[508] | 542 | ! we fill ua and va with the velocities divided by dt, and the streamfunction will be brought to the |
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| 543 | ! right value assuming the velocities have been set up in one time step. |
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| 544 | ! we then set bsfd to zero (first guess for next step is d(psi)/dt = 0.) |
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| 545 | ! sets up s false trend to calculate the barotropic streamfunction. |
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[3] | 546 | |
---|
| 547 | ua(:,:,:) = ub(:,:,:) / rdt |
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| 548 | va(:,:,:) = vb(:,:,:) / rdt |
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| 549 | |
---|
[359] | 550 | ! calls dyn_spg. we assume euler time step, starting from rest. |
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[3] | 551 | indic = 0 |
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[359] | 552 | CALL dyn_spg( nit000, indic ) ! surface pressure gradient |
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[3] | 553 | |
---|
| 554 | ! the new velocity is ua*rdt |
---|
| 555 | |
---|
| 556 | CALL lbc_lnk( ua, 'U', -1. ) |
---|
| 557 | CALL lbc_lnk( va, 'V', -1. ) |
---|
| 558 | |
---|
| 559 | ub(:,:,:) = ua(:,:,:) * rdt |
---|
| 560 | vb(:,:,:) = va(:,:,:) * rdt |
---|
| 561 | ua(:,:,:) = 0.e0 |
---|
| 562 | va(:,:,:) = 0.e0 |
---|
| 563 | un(:,:,:) = ub(:,:,:) |
---|
| 564 | vn(:,:,:) = vb(:,:,:) |
---|
| 565 | |
---|
| 566 | ! Compute the divergence and curl |
---|
| 567 | |
---|
| 568 | CALL div_cur( nit000 ) ! now horizontal divergence and curl |
---|
| 569 | |
---|
| 570 | hdivb(:,:,:) = hdivn(:,:,:) ! set the before to the now value |
---|
| 571 | rotb (:,:,:) = rotn (:,:,:) ! set the before to the now value |
---|
[508] | 572 | ! |
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[3294] | 573 | CALL wrk_dealloc( jpi, jpj, jpk, zprn) |
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[2715] | 574 | ! |
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[3] | 575 | END SUBROUTINE istate_uvg |
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| 576 | |
---|
| 577 | !!===================================================================== |
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| 578 | END MODULE istate |
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